ISOLATION AND CHARACTERIZATION OF SAPONINS FROM CASTANOSPERMUM-AUSTRALE CUNN ET FRASER

Authors
AHMED W USMANGHANI K AHMAD I AHMAD VU MIYASE T
Citation
W. Ahmed et al., ISOLATION AND CHARACTERIZATION OF SAPONINS FROM CASTANOSPERMUM-AUSTRALE CUNN ET FRASER, Chemical and Pharmaceutical Bulletin, 42(2), 1994, pp. 314-317
Citations number
7
Categorie Soggetti
Pharmacology & Pharmacy",Chemistry
Journal title
Chemical and Pharmaceutical Bulletin → ACNP
ISSN journal
00092363
Volume
42
Issue
2
Year of publication
1994
Pages
314 - 317
Database
ISI
SICI code
0009-2363(1994)42:2<314:IACOSF>2.0.ZU;2-O
Abstract
Three new triterpenoid saponins, their methyl esters designated as cas taralesides F (1), G (2) and H (3), were isolated from the fresh leave s of Castanospermum australe. The structures of these three saponins w ere elucidated on the basis of chemical and spectral data as 3 beta-O- [beta-galactopyranosyl-(1 --> 4)-beta-glucuronopyranosyl]-2 beta,23-di hydroxyolean-1 2-en-28-oic acid; 3 beta-O-[alpha-rhamnopyranosyl-(1 -- > 4)-beta-galactopyranosyl-(1 --> 2)-beta-glucuronopyranosyl]-2 beta,2 8-dihydroxyolean-12-ene; and 3 beta-O-[alpha-rhamnopyranosyl-(1 --> 4) -beta-xylopyranosyl-(1 --> 2)-beta-glucuronopyranosyl]-2 beta,28-dihyd roxyolean-12-ene.